diff --git a/CHANGES.md b/CHANGES.md
index 7ac8e05b6..ead69f293 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,12 +2,12 @@
 
 ## Unreleased - 2021-xx-xx
 ### Added
-* `HttpServer::worker_max_blocking_threads` for setting block thread pool []
+* `HttpServer::worker_max_blocking_threads` for setting block thread pool. [#2200]
 
 ### Changed
 * Update `language-tags` to `0.3`.
 
-[#]
+[#2200]: https://github.com/actix/actix-web/pull/2200
 
 
 ## 4.0.0-beta.6 - 2021-04-17